Function of the card:
6/12V Slave
+12V Slave
6V and 12V Series Transistor
power supply
P/U Frame, 3135 processing unit
Power Transistor for Power Supply series regulator
Part number: 370841
PCB number: 484713
Used in: IBM 1443 Printer, IBM System/370
Image courtesy of Henk Stegeman
Pinout:
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Coslet data
This page created by Ken Shirriff on Wed Sep 15 18:15:10 2021.
The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.